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Патент USA US3060994

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Oct. 30, 1962
R. L. WURGAFT
3,060,984
FRUIT JUICING MACHINE
Original Filed July 7, 1958
3 Sheets—Shee’r. 1
451
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INVENTOR.
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Oct. 30, 1962
3,060,984
R. 1_. WURGAFT
FRUIT JUICING MACHINE
Original Filed July ‘7, 1958
3 Sheets-Sheef 2
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INVENTOR.
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Oct. 30, 1962
3,060,984
R. L, WURGAFT
FRUIT JUIC'ING MACHINE
Original Filed July '7, 1958
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3 Sheets-Sheet 3
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3,060,984
Patented Oct. 30., 1962
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FIGURE 5 is a fragmentary top plan View as indi
3,060,984
cated by the line 5—~5 of FIGURE 4;
FRUIT JUICING MAC
Robert I... Wurgaft, Anaheim, Calif, assignor to Citrus
Equipment Corporation, Whittier, Calif, a corporation
of California
'
Continuation of application Ser. No. 746,930, July 7,
1958. This application July 5, 1960, Ser. No. 40,968
7 Claims. (Cl. 146-3)
FIGURE 6 is a fragmentary vertical sectional view
similar in aspect to FIGURE 3, but on the line 6—6 of
FIGURE 2 and showing the pressure ?ngers in the posi
tion of having ?nished slicing an orange;
FIGURE 7 is a vertical sectional view on the line 7—7
of FIGURE 4 showing details of the driving means for
burr-heads for juicing;
This invention relates to machines for extracting juice
by pressure from fruit and more particularly relates to a
machine for extracting juice from citrus fruit. This is
a continuation of my copending application Serial Num
ber 746,930, ?led July 7, 1958, now abandoned, on Fruit
FIGURE 8 is a perspective detail of screening means
for separating juice and pulp; and
FIGURE 9 shows one of the swinging arms of the ma
chine.
Having reference now to the details of the drawing,
15 my improved fruit-juicing machine may be contained in
Juicing Machine.
Although a large business in selling orange juice
a box 10, the rearward part of which is a bin 11 holding
a supply of fruit, the central part 12 containing a motor
is conducted by road-side stands, few such stands squeeze
the juice while the purchaser watches. The purchaser
13 and driving mechanism 14 and also a conveyor 15
consequently is left in doubt as to how fresh the juice
for lifting the fruit, and the forward part 16 containing
is. This lax merchandising is, in my opinion, neces— 20 juice-extracting mechanism. Partitions 17 and 18‘ re
spectively divide the bin 11 from the central part 12,
sitated by time and economy. The stand operator is
and the central part 12 from the juicing compartment 16,
often alone; an automobile full of people often presents
three to six customers at one instant, and it is well known
and thus facilitate keeping the box 10‘ as a whole in a
sanitary condition. A door (not shown) mounted on
ply cannot give the time to pushing oranges through a 25 hinges 19‘ admits to the interior of the compartments
that one car or one truck draws others; the operator sim
machine, nor can he or she afford an assistant.
There
are numerous fully automatic juicing machines for large
scale commercial operations, but these are not at all
suited to squeezing two or twenty oranges at a time and
then stopping. The stand operator must squeeze before
customers arrive and let potential customers speculate as
to freshness.
It is accordingly an object of my invention to pro
vide a fruit-juicing machine which is fully automatic,
12 and 16.
The conveyor 15 has cups 20' mounted on a chain 21
which runs around sprockets 22 and ‘23. The cups 20
extend through a slot 24 in the partition 17 into the bin
11 where they may pick up fruit such as oranges 25.
The drive shaft 26 of the lower sprocket 23‘ has mounted
on it a bevel gear 27 which is driven by another bevel
gear 28. The shaft 29 on which the bevel gear 28 is
mounted is in turn driven by a chain 30 mounted on
which is of such small size as to easily be set on a table 35 sprockets 31 and 32. The sprocket 32 is driven by ‘a
or service counter or even be moved around and which
reduction gear 33, aligning clutch 34 and shaft 35 from
may economically extract juice from any number of
the motor 13. The bottom 36 of the bin 11 is sloped to
oranges, from one upward.
cause oranges or other fruit to roll to the conveyor 15,
It is another object of my invention to provide a
and access from the lower part of the bin 11 to the
citrus juicer into which the operator may throw a number 40 lower part of the central compartment 12 may be had
of oranges, perhaps even selected by the customer, and
the customer may see these same oranges appear one by
through doors 37 which hang on hinges 38.
The cups 20 of the conveyor 15 discharge ‘fruit into
an inclined chute 40. Mounted below the lower end
one, sliced, juiced and the juice appear in a glass, while
of ‘the chute 40 is a knife 41 mounted in a triangular
the stand operator is busy with other parts of an order.
A further object of my invention is to provide a citrus 45 holding block 42 and having its cutting edge 43 upward
so as to split fruit coming to it from the chute 40.
juicer which, while primarily intended for small com
Secured to the ends of the knife 41 below the edge 43
mercial operations, is yet suitable for either family use
are bow springs 44. An orange 25 rolling from the
or for great hotels.
chute 40 will land on the cutting edge 43 and will be
It is speci?cally an object of my invention to provide
a citrus juicer which, once set in motion, need not be 50 held there by the bow springs 44, each of which en
gages the orange at two spaced positions and thus pre
watched or tended and which is both economic and
vents the orange toppling from the knife.
rapid.
Secured to the sides of the block 42 are aprons 45
Further objects and advantages of my citrus juicer will
on which the halves 46 of split fruit slide by gravity
be pointed out as this description proceeds, or will be
apparent from the speci?cation taken in conjunction with 55 to burring stations. The aprons 45 have openings 47
large enough to permit passage of a fruit half. At the
the accompanying drawings, in which:
base of the openings 47 are retaining plates 48 secured
FIGURE 1 is a perspective view of a complete citrus
to the aprons 45 in the form of open-bottomed V’s for
juicer, according to my invention, showing the machine
holding fruit that has slid down the aprons. The V-form
as it might appear on a roat~side stand counter;
of the retaining plates 48 insures that the fruit halves
‘FIGURE 2 is a vertical sectional view on the line 2—2
will be accurately centered upon the openings 47; to make
of FIGURE 1 and on an enlarged scale;
certain that halves of small fruit do not escape, addi
FIGURE 3 is a vertical sectional view on the line 3—3
of FIGURE 2, at right angles to the view of FIGURE 2
and looking toward the rear of the machine, showing
pressure ?ngers in position to grasp an orange;
FIGURE 4 is another vertical sectional view at right
angles to the view of FIGURE 2 taken on the line 4—4
of FIGURE 2 and looking toward the front of the ma
chine with cover parts broken away to show interior mech 70
anism;
tional supporting ?ngers 49 may be disposed between
the plates 48. The openings 47 are partially closed
by elastic closures 50 attached to the under or inner sides
of the aprons 45 which are split down the center to
create openings 51 smaller than the openings 47 so that
the edges 52 of the openings 51 are stretched like curtain
drapes across a window. The elastic closures 50 have
enough strength to hold a fruit half 46 from tumbling
through an opening 47, but nevertheless will yield and
3,060,984
3
4-
spread open to permit a fruit half to be pushed through
stant Wiping by the sliding peels helps to drain the pulp
the opening.
Secured in bearings '55 to the top of the central com
partment are two shafts 56 and 57. The shaft 56' has
secured to it a gear sector 58 with lever arm 59 and the
lever arm 59 is connected to the sprocket 32 by a con
necting rod 60 arranged so that rotation of the sprocket
32 causes oscillation of the gear sector 58. Meshing
.
and adds to the recovery of juice.
Since the cups 20 on the conveyor 15 may be spaced
so that their deposit of fruit in the chute 40 coincides
with one complete oscillation of the swinging arm 65
and 66, it is imposisble to over-feed my improved juicing
machine. Any suitable timing device may be added to
the machine by which the motor 13 runs while a pre
with the gear sector 58 is another gear sector 61 mount
determined number of fruits are juiced or the motor may
ed on ‘the shaft 57.
10 be governed by a ?oat control in the catch basin 82.
The shafts 56 and 57 thus caused to oscillate by their
The disclosed embodiment is not to be construed as
respective gear sectors 58 and 61 extend through the
a limitation upon my invention the scope of which is
partition :18 into the forward compartment 16 on each
deemed to include any desirable constructive modi?cation
side of the knife 41 and just below the cutting edge 43
within the spirit and breadth ‘of the appended claims.
of the knife where they form the pivot points 63 and 15
I claim:
64 for arms 65 and ‘66.
The arms 65 and 66 spaced
apart at their pivot points 63 and 64 have curved ?ngers
67 at their upper ‘ends and cups 68 at their lower ends.
From a substantially vertical position of the arms 65 and
66 the ?ngers 67 are arranged to swing convergently and
then downwardly land to int-erlace as they converge. At
the same instant the cups 68 swing divergently and then
upwardly. The ?ngers 67 will converge upon a fruit 25
held upon the knife edge 43 by the bow springs 44 and
by then forcing the fruit downward upon the knife, will
cause the fruit to split and its halves 46 to release from
the ?ngers and to slide down the ‘aprons 45 to the re
taining plates 48 and supporting ?ngers 49.
That one of the ?ngers 67 nearest the chute 40 carries
upon its back a sheet metal gate 69 which is brought
across the end of the chute 40 to close the chute by the
converging and downward movement of the ?ngers press
ing a fruit again-st the knife and which is swung upward
and away from the chute 40 ‘by the upward and divergent
swinging of the ?ngers 67 to then permit another fruit
to fall from the chute. All the ?ngers 67 have notches
67a which the knife edge may enter to cut the last bit
of rind.
The arms 65 and ‘66 extend downward ‘from the
pivot points 63 and 64 so that the arcs through which
the cups 68 swing are aligned with the opening 47 and
51. The cups 68 are designed and arranged to engage
the fruit halves 46 which have been caught by the retain
ing plates 48 and support ?ngers 49 and to push the fruit
halves through the openings 51 in the elastic closures
50 against reamers or burr-heads 70, as best shown in
FIGURE 3. The burr-heads 70 are arranged back to
back extending outwardly from a splash-guard 71. The
splash-guard 71 protects ‘a pulley 72 and belt 73 from
juices extracted by the burr-heads 70 and also protects
the bearings 74 of the shaft 75 on which the burr-heads
70 and pulley 7-2 are mounted and which may suitably
be mounted in the splash-guard 71. The belt 73 is driven
from a pulley 76 on the shaft 35 of the motor 13.
It will be seen the swinging arms 65 and 66 successively
cause a fruit to be sliced and then to be juiced. The
cups 68 swing downwardly and then swing convergently
1. In a fruit-juicing machine: a frame, a pair of spaced
arms; ?ngers on one end of each of said arms for grasp~
ing a fruit; cups on the other ends of said arms for grasp
ing, each, a half fruit; means on said frame between said
?ngers and said cups for pivotally connecting said arms
to said frame; means operably connected to said arms
for causing oscillating swinging movement of said arms
about said pivot means; a knife blade disposed on said
frame to split a fruit pressed thereagainst by said ?ngers;
and burr heads disposed on said frame to ream split por
tions of fruit pressed thereagainst by said cups.
2. In a fruit-juicing machine: a frame, a pair of spaced
arms pivotally mounted on said frame adjacent their
mid-points for alternately swinging their like ends con
vergently; means on said frame for causing oscillating
swinging movement of said arms; a knife blade on said
frame; ?ngers on one end of each of said arms for grasp
ing a fruit and pressing said fruit against said knife blade
to split said fruit; cups on the other ends of said arms
for grasping, each, a half fruit; means on said frame
aligned with the arcs through which said cups swing for
catching and holding half fruit portions so that said
swinging cups may grasp said portions; and burr heads
on said frame aligned with said arcs for reaming half
fruit portions grasped by said swinging cups.
3. In a fruit-juicing machine: a frame, a pair of spaced
arms having generally upper and lower ends and movable
in the same vertical plane and pivoted adjacent their
mid-points to said frame for alternately swinging their re
' spective upper ends convergently and downwardly and
their respective lower ends downwardly and convergent
ly; means operably connected to said arms for imparting
oscillating swinging movement to said arms; a knife blade
on said frame between and below said upper arm ends;
?ngers on said upper arm ends arranged for cooperatively
grasping a fruit and by said swinging movement pressing
said fruit downward upon said knife blade to split said
fruit; burr heads on said frame aligned with the arcs
through which said lower arm ends swing; and cups on
said lower arm ends for grasping split portions of fruit
and swinging said split portions against said burr heads.
4. In a fruit-juicing machine: a frame, a pair of spaced
so that they may bring the fruit halves 46 to the burr
arms having pivot points on said frame adjacent their
heads 70 in a horizontal movement and may swing away
from the burr-heads in the reverse horizontal movement 60 mid-points for swinging in the same vertical plane and
having like ends swinging convergently and downwardly
which assists them in disposing of the rinds. For this
above said pivot points and other like ends swinging down
purpose the cups 68 are provided with slots 78 through
wardly and convergently below said pivot points; means
which leaf springs 79 may pass. The springs ‘79 are bent
operably connected to said arms for imparting oscillating
down by contact with the fruit halves 46 as the cups
swinging movement to said arms; ?ngers on sadi ?rst
68 swing convergently, but spring up when the cups have
mentioned ends, said ?ngers on one of said arms being
passed them and again make contact with the rinds held
arranged to interlace with said ?ngers of the other of said
by the cups as the cups swing outwardly. The rinds are
arms when said ?rst-mentioned ends converge so as then
thus knocked from the cups 68 and fall upon peel slides
80, down which they slide to exit ports 81 where they
to grasp a fruit and press said fruit downward; a knife
may be collected. The support ?ngers 49‘ also pass 70 blade on said frame between and below said ?rst-men
tioned ends upon which said ?ngers may press said fruit
through the slots 78. The peel slides 80 are provided
to split said fruit; aprons on said frame below said knife
with a multiplicity of perforations 81 which permit the
blade diverging downwardly upon which split portions of
juice to drain through to a catch basin. 82 from which
said fruit may slide; cups on said last-mentioned arm ends
it can be removed through a pet-cock 83. A certain
amount of pulp will fall upon the slides 80 and the con 75 adapted to grasp said split portions of fruit; burrs on
3,060,984
5
said frame aligned with the arcs through which said cups
are swung; said aprons having openings aligned with said
burrs and said cups through which said cups may swing
said split portions of fruit against said burrs; and means
for arresting and holding said split portions of fruit op
posite to said openings until said cups grasp said portions.
5. In a fruit-juicing machine: a frame, an arm, means
adjacent one end of said arm for contacting a fruit, a
cup adjacent the other end of said arm for grasping a half
6
arms having generally upper and lower ends and mov
able in the same vertical plane and pivoted adjacent their
mid-points to said frame for alternately swinging their
respective upper ends convergently and downwardly and
their respective lower ends downwardly and convergently;
means operably connected to said arms for imparting oscil
lating swinging movement to said arms; a knife blade on
said frame between and below said upper arm ends; means
on said upper arm ends arranged for cooperatively con
fruit; means on said frame between said contacting means 10 tacting a rfruit and by said swinging movement pressing
and said cup for pivotally connecting said arm to said
frame, means operably connected to said arm for causing
swinging movement of said arm about said pivot means,
a knife blade on said frame disposed to split a fruit pressed
thereagainst by said contacting means, and a reamer on 15
said frame disposed to ream split portions of fruit pressed
thereagainst by said cup.
6. The machine of claim 5 including means aligned
with the are through which said cup swings for catching
and holding half fruit portions so that said swinging cup 20
may grasp said portions.
7. In a fruit-juicing machine: a frame, a pair of spaced
said fruit downward upon said knife blade to split said
fruit; burr heads on said frame aligned with the arcs
through which said lower arm ends swing; and cups on
said lower arm ends for grasping split portions of fruit
and swinging said split portions against said burr heads.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,620,551
2,737,989
2,853,107
Hughes ______________ __ Mar. 8, 1927
Wurgaft _____________ __ Mar. 13, 1956
Alexander ____________ __ Sept. 23, 1958
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